crpf samachar may_ june-2012 - Central Reserve Police Force

10
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New Innovation
Operating Systems- The changing phase
Introduction
An operating system is a control program
used to manage user programs, prevent
errors, protect resources, and resolve conflicts. It's
basically the interface between us users and the
programs/hardware that we want to use. The first
computers did not have operating systems. By the
early 1960s, commercial computer vendors were
supplying quite extensive tools for streamlining the
development, scheduling, and execution of jobs on
batch processing systems.
It's difficult to say since things can change
so rapidly. New paradigms are always being
introduced. As you can see operating systems have
evolved much during the years. Ever improving
computer hardware has enabled operating systems
to evolve from simple batch systems to multitasking,
multi-user, multimedia, networking systems. The
interface evolved from a very simple text based UI
to user customizable graphical icons. Operating
systems now have the ability to produce high
quality graphics, provided they have the hardware.
Windows 8 the new Operating System
1. Support for both x86 PCs and ARM tablets
Windows 8 is the first edition of Windows to
operate on both ARM-based tablets and traditional
x86 PCs based on ARM processors from Intel.
“Support for ARM-based chipsets, touch, sensors
makes Windows 8 work beautifully on your choice
of a full spectrum of devices, such as 10-inch slates
with all-day battery life, ultra-lightweight laptops,
Insp/T K Sivakumar,
CIT, Bengaluru
and powerful all-in-ones with 27-inch highdefinition
screens,”
2. Speedy Boot Time
The load and boot up speed has improved
significantly over Windows’ predecessors. This
is partly due to the better resource allocations to
applications and the system. When compared to
Windows 7 desktop CPU, Windows 8 has an even
speedier boot time. Under Windows 7, our average
startup time was 56.2 seconds. Under Windows 8,
that time dropped to 36.8 seconds.
Why is Windows 8 so quick to start up? With
the latest incarnation of Windows, Microsoft has
introduced a new “hybrid boot,” combining the
speed and functionality of Windows’ hibernate
mode and the benefits of a fresh startup session.
A bit of background: When you choose to
shut down your PC, Windows closes all running
applications and services, and then powers down.
When you choose the hibernate option, Windows
writes everything currently in RAM to a file on
your hard drive, and then shuts down. This adds
some time to the shutdown process, but your PC
will boot faster and be right where you left it before
hibernating. In Windows 8, shutting down your PC
closes all running applications, but hibernates the
underlying operating system. When you turn your
PC back on, Windows 8 will load that saved state